Diffusion Enhancement in Highly Excited MAPbI3 Perovskite Layers with Additives

Patrik Ščajev, Chuanjiang Qin, Ramunas Aleksiejunas, Paulius Baronas, Saulius Miasojedovas, Takashi Fujihara, Toshinori Matsusima, Chihaya Adachi, Saulius Juršėnas

Research output: Contribution to journalArticle

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Abstract

Carrier mobility is one of the crucial parameters determining the electronic device performance. We apply the light-induced transient grating technique to measure independently the carrier diffusion coefficient and lifetime, and to reveal the impact of additives on carrier transport properties in wet-cast CH3NH3PbI3 (MAPbI3) perovskite films. We use the high excitation regime, where diffusion length of carriers is controlled purely by carrier diffusion and not by the lifetime. We demonstrate a four-fold increase in diffusion coefficient due to the reduction of localization center density by additives; however, the density dependence analysis shows the dominance of localization-limited diffusion regime. The presented approach allows us to estimate the limits of technological improvement - carrier diffusion coefficient in wet-cast layers can be expected to be enhanced by up to one order of magnitude.

Original languageEnglish
Pages (from-to)3167-3172
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume9
Issue number12
DOIs
Publication statusPublished - Jun 21 2018

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Perovskite
diffusion coefficient
augmentation
casts
life (durability)
diffusion length
carrier mobility
Carrier transport
transport properties
Carrier mobility
gratings
Transport properties
perovskite
estimates
electronics
excitation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Ščajev, P., Qin, C., Aleksiejunas, R., Baronas, P., Miasojedovas, S., Fujihara, T., ... Juršėnas, S. (2018). Diffusion Enhancement in Highly Excited MAPbI3 Perovskite Layers with Additives. Journal of Physical Chemistry Letters, 9(12), 3167-3172. https://doi.org/10.1021/acs.jpclett.8b01155

Diffusion Enhancement in Highly Excited MAPbI3 Perovskite Layers with Additives. / Ščajev, Patrik; Qin, Chuanjiang; Aleksiejunas, Ramunas; Baronas, Paulius; Miasojedovas, Saulius; Fujihara, Takashi; Matsusima, Toshinori; Adachi, Chihaya; Juršėnas, Saulius.

In: Journal of Physical Chemistry Letters, Vol. 9, No. 12, 21.06.2018, p. 3167-3172.

Research output: Contribution to journalArticle

Ščajev, P, Qin, C, Aleksiejunas, R, Baronas, P, Miasojedovas, S, Fujihara, T, Matsusima, T, Adachi, C & Juršėnas, S 2018, 'Diffusion Enhancement in Highly Excited MAPbI3 Perovskite Layers with Additives', Journal of Physical Chemistry Letters, vol. 9, no. 12, pp. 3167-3172. https://doi.org/10.1021/acs.jpclett.8b01155
Ščajev P, Qin C, Aleksiejunas R, Baronas P, Miasojedovas S, Fujihara T et al. Diffusion Enhancement in Highly Excited MAPbI3 Perovskite Layers with Additives. Journal of Physical Chemistry Letters. 2018 Jun 21;9(12):3167-3172. https://doi.org/10.1021/acs.jpclett.8b01155
Ščajev, Patrik ; Qin, Chuanjiang ; Aleksiejunas, Ramunas ; Baronas, Paulius ; Miasojedovas, Saulius ; Fujihara, Takashi ; Matsusima, Toshinori ; Adachi, Chihaya ; Juršėnas, Saulius. / Diffusion Enhancement in Highly Excited MAPbI3 Perovskite Layers with Additives. In: Journal of Physical Chemistry Letters. 2018 ; Vol. 9, No. 12. pp. 3167-3172.
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